Add support for (hover) 'text' in mesh3d traces

src/traces/mesh3d/attributes.js

@@ -12,10 +12,10 @@ var colorAttrs = require('../../components/colorscale/color_attributes');
 var colorscaleAttrs = require('../../components/colorscale/attributes');
 var colorbarAttrs = require('../../components/colorbar/attributes');
 var surfaceAtts = require('../surface/attributes');
+var baseAttrs = require('../../plots/attributes');
 
 var extendFlat = require('../../lib/extend').extendFlat;
 
-
 module.exports = extendFlat(colorAttrs('', 'calc', false), {
     x: {
         valType: 'data_array',
@@ -78,6 +78,19 @@ module.exports = extendFlat(colorAttrs('', 'calc', false), {
 
     },
 
+    text: {
+        valType: 'string',
+        role: 'info',
+        dflt: '',
+        arrayOk: true,
+        editType: 'calc',
+        description: [
+            'Sets the text elements associated with the vertices.',
+            'If trace `hoverinfo` contains a *text* flag and *hovertext* is not set,',
+            'these elements will be seen in the hover labels.'
+        ].join(' ')
+    },
+
     delaunayaxis: {
         valType: 'enumerated',
         role: 'info',
@@ -209,5 +222,7 @@ module.exports = extendFlat(colorAttrs('', 'calc', false), {
             description: 'Epsilon for face normals calculation avoids math issues arising from degenerate geometry.'
         },
         editType: 'calc'
-    }, surfaceAtts.lighting)
+    }, surfaceAtts.lighting),
+
+    hoverinfo: extendFlat({}, baseAttrs.hoverinfo, {editType: 'calc'})
 });

src/traces/mesh3d/convert.js

@@ -40,6 +40,13 @@ proto.handlePick = function(selection) {
             this.data.z[selectIndex]
         ];
 
+        var text = this.data.text;
+        if(Array.isArray(text) && text[selectIndex] !== undefined) {
+            selection.textLabel = text[selectIndex];
+        } else if(text) {
+            selection.textLabel = text;
+        }
+
         return true;
     }
 };

src/traces/mesh3d/defaults.js

@@ -84,4 +84,6 @@ module.exports = function supplyDefaults(traceIn, traceOut, defaultColor, layout
         else if('vertexcolor' in traceIn) coerce('vertexcolor');
         else coerce('color', defaultColor);
     }
+
+    coerce('text');
 };

src/traces/scatter3d/attributes.js

@@ -11,6 +11,7 @@
 var scatterAttrs = require('../scatter/attributes');
 var colorAttributes = require('../../components/colorscale/color_attributes');
 var errorBarAttrs = require('../../components/errorbars/attributes');
+var baseAttrs = require('../../plots/attributes');
 var DASHES = require('../../constants/gl3d_dashes');
 
 var MARKER_SYMBOLS = require('../../constants/gl3d_markers');
@@ -171,6 +172,8 @@ var attrs = module.exports = overrideAll({
     error_x: errorBarAttrs,
     error_y: errorBarAttrs,
     error_z: errorBarAttrs,
+
+    hoverinfo: extendFlat({}, baseAttrs.hoverinfo)
 }, 'calc', 'nested');
 
 attrs.x.editType = attrs.y.editType = attrs.z.editType = 'calc+clearAxisTypes';

src/traces/surface/attributes.js

@@ -11,6 +11,7 @@
 var Color = require('../../components/color');
 var colorscaleAttrs = require('../../components/colorscale/attributes');
 var colorbarAttrs = require('../../components/colorbar/attributes');
+var baseAttrs = require('../../plots/attributes');
 
 var extendFlat = require('../../lib/extend').extendFlat;
 var overrideAll = require('../../plot_api/edit_types').overrideAll;
@@ -112,9 +113,17 @@ var attrs = module.exports = overrideAll({
     },
 
     text: {
-        valType: 'data_array',
-        description: 'Sets the text elements associated with each z value.'
+        valType: 'string',
+        role: 'info',
+        dflt: '',
+        arrayOk: true,
+        description: [
+            'Sets the text elements associated with each z value.',
+            'If trace `hoverinfo` contains a *text* flag and *hovertext* is not set,',
+            'these elements will be seen in the hover labels.'
+        ].join(' ')
     },
+
     surfacecolor: {
         valType: 'data_array',
         description: [
@@ -242,7 +251,9 @@ var attrs = module.exports = overrideAll({
         zmax: extendFlat({}, colorscaleAttrs.zmax, {
             description: 'Obsolete. Use `cmax` instead.'
         })
-    }
+    },
+
+    hoverinfo: extendFlat({}, baseAttrs.hoverinfo)
 }, 'calc', 'nested');
 
 attrs.x.editType = attrs.y.editType = attrs.z.editType = 'calc+clearAxisTypes';

src/traces/surface/convert.js

@@ -67,10 +67,13 @@ proto.handlePick = function(selection) {
         ];
 
         var text = this.data.text;
-        if(text && text[selectIndex[1]] && text[selectIndex[1]][selectIndex[0]] !== undefined) {
+        if(Array.isArray(text) && text[selectIndex[1]] && text[selectIndex[1]][selectIndex[0]] !== undefined) {
             selection.textLabel = text[selectIndex[1]][selectIndex[0]];
+        } else if(text) {
+            selection.textLabel = text;
+        } else {
+            selection.textLabel = '';
         }
-        else selection.textLabel = '';
 
         selection.data.dataCoordinate = selection.dataCoordinate.slice();
 

test/jasmine/tests/gl3d_plot_interact_test.js

@@ -36,7 +36,10 @@ describe('Test gl3d plots', function() {
     var mock3 = require('@mocks/gl3d_autocolorscale');
 
     function assertHoverText(xLabel, yLabel, zLabel, textLabel) {
-        var content = [xLabel, yLabel, zLabel];
+        var content = [];
+        if(xLabel) content.push(xLabel);
+        if(yLabel) content.push(yLabel);
+        if(zLabel) content.push(zLabel);
         if(textLabel) content.push(textLabel);
         assertHoverLabelContent({nums: content.join('\n')});
     }
@@ -193,6 +196,16 @@ describe('Test gl3d plots', function() {
         .then(_hover)
         .then(function() {
             assertHoverText('x: 二 6, 2017', 'y: c', 'z: 100k', 'Clementine');
+
+            return Plotly.restyle(gd, 'hoverinfo', 'text');
+        })
+        .then(function() {
+            assertHoverText(null, null, null, 'Clementine');
+
+            return Plotly.restyle(gd, 'hoverinfo', 'z');
+        })
+        .then(function() {
+            assertHoverText(null, null, '100k');
         })
         .catch(fail)
         .then(done);
@@ -273,6 +286,23 @@ describe('Test gl3d plots', function() {
                 'colorbar.tickvals': undefined,
                 'colorbar.ticktext': undefined
             });
+
+            return Plotly.restyle(gd, 'hoverinfo', 'z');
+        })
+        .then(_hover)
+        .then(function() {
+            assertHoverText(null, null, '43');
+
+            return Plotly.restyle(gd, 'hoverinfo', 'text');
+        })
+        .then(_hover)
+        .then(function() {
+            assertHoverText(null, null, null, 'one two');
+
+            return Plotly.restyle(gd, 'text', 'yo!');
+        })
+        .then(function() {
+            assertHoverText(null, null, null, 'yo!');
         })
         .then(done);
     });
@@ -302,6 +332,60 @@ describe('Test gl3d plots', function() {
         .then(done);
     });
 
+    it('should display correct hover labels (mesh3d case)', function(done) {
+        var x = [1, 1, 2, 3, 4, 2];
+        var y = [2, 1, 3, 4, 5, 3];
+        var z = [3, 7, 4, 5, 3.5, 2];
+        var text = x.map(function(_, i) {
+            return [
+                'ts: ' + x[i],
+                'hz: ' + y[i],
+                'ftt:' + z[i]
+            ].join('<br>');
+        });
+
+        function _hover() {
+            mouseEvent('mouseover', 250, 250);
+            return delay(20)();
+        }
+
+        Plotly.newPlot(gd, [{
+            type: 'mesh3d',
+            x: x,
+            y: y,
+            z: z,
+            text: text
+        }], {
+            width: 500,
+            height: 500
+        })
+        .then(delay(20))
+        .then(_hover)
+        .then(function() {
+            assertHoverText('x: 3', 'y: 4', 'z: 5', 'ts: 3\nhz: 4\nftt:5');
+        })
+        .then(function() {
+            return Plotly.restyle(gd, 'hoverinfo', 'x+y');
+        })
+        .then(function() {
+            assertHoverText('(3, 4)');
+        })
+        .then(function() {
+            return Plotly.restyle(gd, 'hoverinfo', 'text');
+        })
+        .then(function() {
+            assertHoverText('ts: 3\nhz: 4\nftt:5');
+        })
+        .then(function() {
+            return Plotly.restyle(gd, 'text', 'yo!');
+        })
+        .then(function() {
+            assertHoverText(null, null, null, 'yo!');
+        })
+        .catch(fail)
+        .then(done);
+    });
+
     it('should be able to reversibly change trace type', function(done) {
         var _mock = Lib.extendDeep({}, mock2);
         var sceneLayout = { aspectratio: { x: 1, y: 1, z: 1 } };